You always need scissors near by. These are the two you need. Turquoise is a straight blade and the Purple is a curved blade. I always need one nearby for quick snips!
I really like the Purple curved blade for quicky snips when I need to fix a broken warp thread.
The Turquoise is a multi use straight blade for quick snips when spinning, knitting or anything really.
The best thing about both of these is the price! Really affordable and they even come with a nice snap on blade cover.
Get several, near the loom, knitting bag, spinner or sewing machine too.